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frutty [35]
3 years ago
8

List the four adaptation seen in Australopithecus afarensis fossils that enable biedalism.

Biology
1 answer:
Zinaida [17]3 years ago
6 0

Answer:

hope this helps

Explanation:

Bipedal modifications include "stacking" the bulk of the body weight on a small region near the center of gravity (i.e., the head is above the chest, which is above the pelvis, which is over the knees, which is above the feet).

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The nucleoid region of a prokaryotic cell
Vladimir79 [104]

Answer:

A. contains the cell's DNA

Explanation:

Prokaryotic cells such as the bacterial cells and the cells of archaeans do not have a membrane-bound nucleus. Their genetic material DNA is present in the cytoplasm only. However, their genetic material is concentrated in a specific region inside their cells. This is called a nucleoid. Nucleoid does not have any surrounding membrane. It represents the nuclear area where the DNA of the prokaryotic cells is present.

7 0
3 years ago
What can you do to make sure you conduct a lab activity in a safe manner. Give 3 examples​
ankoles [38]

Answer:

Explanation:

wear gloves if fire

wear goggles always

no long droopy sleves

no food

7 0
3 years ago
Read 2 more answers
Which of the following is homozygous dominant? a AA b Aa c aa
GarryVolchara [31]

Answer: a). AA

Explanation: Every trait is controlled by at least a pair of gene. Genes have different forms known as alleles. Alleles can be dominant or recessive. A dominant allele expresses itself in the presence of a recessive allele and masks the effect of a recessive allele. A recessive allele cannot express itself in the presence of a dominant allele and it's effect is masked by a dominant allele. Dominant alleles are usually written in upper cases such as A, T, while recessive alleles are usually written in lower cases such as a, t. The two alleles that determines a trait is called a genotype. A genotype can be homozygous if the two alleles are identical such as in AA or aa

and can be heterozygous if the two alleles are not identical such as in Aa, Tt.

6 0
2 years ago
which of the following levels of protein organization shows the complete 3D arrangement of the polypeptide chain
kherson [118]

Proteins are the macromolecules made of hundreds of amino acids. Proteins are most varied class of biological molecules and show the greatest variety of structures. Many have detailed three-dimensional folding patterns that result in a compact form, but others do not fold up at all and they are in random conformations. The function of proteins depends on their structure.

The secondary structure of protein fold together to form the 3D arrangement of a polypeptide chain that results into Tertiary structure which is a functional protein.    


4 0
3 years ago
Why does CaCl2 need to be added to cells to make them 'competent'? Why does CaCl2 need to be added to cells to make them 'compet
V125BC [204]
DNA is a negatively-charged molecule. Also cell membranes are negatively charged. The problem would be how to push this charges together? I<span>f you put some CaCl2 into the mixture, the CaCl2 will "split" giving 2Cl- and Ca2+. This last ion will be attracted by the negatively charged DNA and will "cover" it, hiding its negative charge. Hope this answers the question.</span>
8 0
3 years ago
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